Gastec 112 快速乙醇检测管C2H5OH(0.01~7.5%)

Indicator: 0.1 to 2.5%
Measuring Range: 
+ 0.01 to 0.05%, Number of Pump Strokes 2
+ 0.05 to 2.5%, Number of Pump Strokes 1
+ 0.05 to 2.5%, Number of Pump Strokes 1/2
Sampling Time: 1 mimute per pump stroke
Colour Change: Pink → Pale blue
Reaction Principle: C2H5OH + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 15% (for 0.05 to 0.5 %), 10% (for 0.5 to 2.5 %)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.01 to 0.05% 0.05 to 2.5% 2.5 to 7.5%
Number of Pump Strokes
2 1 1/2
Correction Factor
0.2 1 3
Sampling Time 1 minute per pump stroke
Detecting Limit 0.004% (n=2)
Colour Change Pink → Pale blue
Reaction Principle C2H5OH + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation 15% (for 0.05 to 0.5 %), 10% (for 0.5 to 2.5 %)
Shelf Life 3 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Carbon monoxide   No No
Carbon dioxide   No No
Alcohols   + Pale blue
Calibration gas generation Static gas dilution method
TLV-TWA TLV-STEL Explosive range
- 1000ppm(2014) 3.3 to 19%
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